"amalgamated to form" is a correct phrase and can be used in written English.
It means to combine or merge different things or elements to form something new or larger. Example: "The two companies were amalgamated to form a larger and more competitive organization."
In Daniel Rosenbaum's intriguing montages of printed source material and paint, everything from modern maps to Piero di Cosimo's "Death of Procris" is amalgamated to form hybrid imagery that comments on the loss of innocence.
This continued until October 1987, when the two companies were amalgamated to form the current 11th/28th Battalion, Royal Western Australia Regiment.
Some syllables were kept unaltered, while others were amalgamated to form a single sound or more than one; according to Kompas, the "ku" syllables in "Kidung Abadi" were an amalgamation of 1,056 "ku" syllables in Chrisye's previous songs.
Moreover, small irrigation units were amalgamated to form fewer and bigger irrigation associations which were organized according to a uniform model.
Mahogany Opera and the Opera Group have amalgamated to form the Mahogany Opera Group.
In 1973 the four Muslim parties were amalgamated to form the United Development Party (Partai Persatuan Pembangunan; PPP), and the five non-Muslim parties were amalgamated to form the Indonesian Democratic Party (Partai Demokrasi Indonesia; PDI).
That is complicated by the fact that, owing to their long-standing contact with one another, India's languages have come to converge and to form an amalgamated linguistic area a sprachbund comparable, for example, to that found in the Balkans.
As a part of this process, the division was reduced from 12 infantry battalions to nine as six battalions were merged to form new amalgamated units 29th/22nd, 37th/52nd and 57th/60th Battalions.
At this time, the 18th Battalion was re-raised, albeit as an amalgamated unit with the 17th Battalion to form the 17th/18th Battalion (The North Shore Regiment).
Just south of Red Butte in the Jim Camp Wash drainage, and at Point of Bluff, lower Flattops One sandstones merge to form a massive amalgamated sandstone units more than 20 meters (60 feet) thick (Figure 11c, Figure 12b).
The two companies merged in 1899, forming the South Eastern and Chatham Railway (SECR), further amalgamated with other railways by the Railways Act 1921 to form the Southern Railway. Britain's railways were nationalised in 1948, forming British Rail.
