The phrase "and melted into a" is correct and usable in written English.
It can be used in contexts where something is transforming or blending into another substance or state, often in a descriptive or metaphorical sense.
Example: "The chocolate was heated until it melted into a smooth, velvety sauce."
Alternatives: "and blended into a" or "and transformed into a".
They shuffled down the street and melted into a small crowd on the sidewalk outside the Church of the Holy Cross.
39) that began stormily and melted into a graceful but assertive account of the choralelike central section, with its layers of sparkling filigree.
Samad's classmate told law enforcement officials that the suspects were dressed in everyday clothes and melted into a crowd of bystanders after the attack.
Harlan and I attended and hosted parties, tried new restaurants and melted into a sun-drenched, wine-infused weekend in Napa.
The last time I did MDMA I did a cough-sweet-sized lump and melted into a puddle in the street.
At the outset, clarinet and cello play a microtonally expanding interval, which pulses weirdly and melts into a quivering pitch produced by an e-bow, or electric bow, on the guitar.
But when we try to grasp these musical or picturesque or other qualities, they elude us and turn into each other, and melt into a unity, however we may be accustomed to distinguish them by different names; a practical proof that art is one and cannot be divided into arts.
Unless you're one of those hyper-prepared nature freaks, you will dehydrate and melt into a puddle of death.
Also, was it just me or did your heart sink and melt into a puddle of goo when Scott left all the toys and candy for Kourtney and the kids at the Gansevoort?
Whereas our younger child would waste away and melt into a vidiot playing mindless games if given the chance, Christopher instead uses his time with technology to Google animals and learn about their natural habitats.
